// Copyright 2021 Matrix Origin
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package tree

import "go/constant"

//the AST for literals like string,numeric,bool and etc.
type Constant interface {
	Expr
}

//the AST for the constant numeric value.
type NumVal struct {
	Constant
	Value constant.Value

	// negative is the sign label
	negative bool

	// origString is the "original" string literals that should remain sign-less.
	origString string

	//converted result
	resInt   int64
	resFloat float64
}

func (n *NumVal) String() string {
	return n.origString
}

func NewNumVal(value constant.Value, origString string, negative bool) *NumVal {
	return &NumVal{Value: value, origString: origString, negative: negative}
}